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Generac gp5000 will not start. Replaced on/off switch, ignition coil, spark plug AND carb. as well as fuel line and fuel filter. I have spark but cannot get the engine to even cough.

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  • Garden Master
  • 1,560 Answers

You have spark so a quick test using starter fluid.

Remove air filter.
Spray a short bust (~1 second) of starter fluid directly into throat of carburetor.
Promptly crank engine.


If engine is not flooded and spark, timing, and compression are satisfactory, the engine will run for a couple seconds until starter fluid is exhausted.


If it fires with starter fluid it indicates no fuel is being delivered from carburetor.


If it doesnt fire, then insufficient spark, engine is flooded, insufficient compression, or timing.

Posted on Oct 14, 2019

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  • Garden Master
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DOES IT HAVE LOW OIL SHUTDOWN?? MIGHT BE THAT SWITCH
http://outdoorpowerinfo.com/repairs/generac_low_oil_shutdown.asp

Posted on Oct 13, 2019

Testimonial: "Yes it does. Oil level is where it should be. I've also tried to start with that wire disconnected. I do have spark"

  • 1 more comment 
  • ANTISPAMMER Oct 13, 2019

    TRY SOME STARTING FLUID IF THAT WORKS YOUR CARBS NOT ADJUSTED RIGHT. IS THERE A WIRE GOING TO THE CARB??

  • ANTISPAMMER Oct 13, 2019

    YOU CAN ALSO CHECK HERE. I SUGGEST YOU JOIN THE FORUM TOO. ITS A GREAT ONE TO USE.https://www.zillerstore.com/?forum=70513...

  • ANTISPAMMER Oct 13, 2019

    ONE MORE QUESTION. DOES IT HAVE A LOT OF HOURS ON IT?? HAVE YOU EVER CHECKED AND RESET THE VALVE LASH??? .004" IS THE SPEC IF NOT YOU COULD HAVE 0 COMPRESSION

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Go to manuels.com and download the book. or if you have a book, go to the troubleshooting chapter. lol.

Posted on Oct 13, 2019

6 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

roeb

  • 819 Answers

SOURCE: starts runs min. or two then stops....

Go to toro.com then click customer care, then click manuals and parts. Type in model no. and download the owners manual. This should get you the spark and flywheel gap. Probably still something in the carb. Some orifices are very hard to find and to clean but they must be clean. Also check for dirt dopper nest in the muffler.

Posted on Apr 06, 2009

Anonymous

  • 226 Answers

SOURCE: Craftsman Chainsaw will not start

It's your ignition, which you can take that stuff apart on the left hand side of the saw under the recoil. I have 2 of these, & you can get the parts. Maybe its just the magneto gap adjustment, which is like a business card or newspaper width gap. I would check that first. Hope this helps you, Rick

Posted on Apr 29, 2009

kel1guy2002

Kelly

  • 3740 Answers

SOURCE: i have a generac ix

You engine has a low oil level sensor. If the oil level is low or..... the sensor is bad it will ground the ignition from the coil with the engine switch on. For troubleshooing only disconnect ONE wire from the sensor AFTER you make sure the engine oil level is properly serviced. Then check for spark.

If this does not correct the problem just respond and I will help you.

Thanks for choosing FixYa,
Kelly

Posted on Mar 29, 2011

#1 Taper

Jim Parker

  • 1041 Answers

SOURCE: Engine runs great for 10 minutes and then stalls.

Believe it or not, your gas cap is clogged up with dirt and debris. When a carburetor is unable to get a constant flow of air from outside, pressure builds up on the fuel tank. The fastest way to determine whether or not this is the problem is as follows.

As you are using your Mower, at that point when it begins to stall out, loosen the gas cap so that you release the pressure that is built up in the gas tank. If the engine begins to regain power, then you know it is a clogged gas cap. (Simply get a small wire and clear the breathe holes in the cap.) If the engine dies even after loosening the gas cap, then you may want to check to make sure the air breather is clean. ( A dirty air breather can cause the engine to over heat and stall out.)

If none of this seems to help, then it is probably a bad Ignition Coil.

Good Luck!

Jim

Posted on Jul 29, 2011

perkins48

Thomas Perkins

  • 14763 Answers

SOURCE: 2001 Husqvarna 55 rancher will not start.

Adjust the carb.,or rebuild it.

Posted on Nov 16, 2012

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Here's a quote from amy Chilton's manual for 1980-1987.

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After running for 20 to 30 minutes, engine looses power and stops. Will start up again immediately. Recently replaced spark plug, air filter, fuel filter and an oil change.


This type of issue has 3 possible senerios. In 35 years, I have experienced each of these by themselves, or sometimes multiples at the same time. This is a tough issue, but can be resolved with enough patience and a test area.

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f) fitting on the side of the carburetor
g) some systems have a filter inside the line at the opening of the carb inlet
h) fuel pump
i) vacuum hoses to fuel pump
j) debris under inlet needle/seat on carb

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b) Ignition switch or circuit breaker overheating
c) wire connection on plug-ins to switch or wire harness
d) points/condensor breakdown
e) ignition/armature coil
f) spark plug wire
g) electronic trigger/coil overheat

#3 Exhaust Valve and/or sticking due to overheating
a) valve stem is coated with excess carbon
b) valve face and seat are worn and do not seat properly after becoming warm
c) valve clearance too tight

I’m happy to assist further over the phone at https://www.6ya.com/expert/rolandw_c013176d62ee17ae

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1 Answer

WONT START


Not so many reasons she won't start. 4-Strokes are Simple!

Here they are:

Motor:
Fuel Tank-> Fuel Line-> Fuel Filter-> Carb-> Intake (Valve)-> Piston-> Exhaust (Valve)-> Muffler

Carb (Old Style):
Fuel Side:
Fuel Bowl-> Float-> Needle Seat-> Fuel Ports (Venturi)
Air Side:
Air Filter-> Carb Air Intake-> Butterflies (2)
(Clean 'em ALL!)

Hardware (Motor):
Rotor (Magnets)-> Magneto (Ignition Coil)-> Spark Plug Wire-> Spark Plug-> Cylinder Head (Spark Plug Ground)

Ignition:
Kill Switches (Seat, Clutch, etc.)-> Spark Plug/Ignition Coil-> Ground
Key Ignition-> Battery->Starter/Generator

If one of those fail.......= Non-Starting 4-Stroke!

Fixes-
Fuel:
You are either getting too much, or too little. Too much = Carb.
Too little = Carb. Therefore, tear down the Carb (COMPLETELY-Careful!) and clean it up.

Electrical:
Grounding out the System (Kill Switches)
Battery-> Ignition-> Starter.
Magneto->Plug Wire->Plug (Check 'em all!)


May 28, 2009 | Mtd Garden

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